Programming the Automatic door remote controller SKU168511 from Banggood.com (433.92Mhz Wireless Remote Control for Electric Door Security Alarm, http://eu.banggood.com/Wholesale-Warehouse-433_92Mhz-Wireless-Remote-Control-for-Electric-Door-Security-Alarm-wp-Uk-950198.html?p=TZ19138952192014114J) does not work according to instructions.
It fails step 2 (no light is flashing after step 2)

How to Program Your Remote :

(1)Press and hold both "lock""unlock" together until LED quickly flashes 3 times.
(2)Do not release both "lock""unlock" buttons,release and press "unlock" 3 times.LED will flash 3 times after this action.